Cost $680 Million To Build... And Can't Float

As Spain seeks to rein in ballooning deficits, it has discovered some of its bloat surfacing from an unexpected place: under the sea.

According to El Pais, the S-81 Isaac Peral -- the first of four state-of-the-art new submarines commissioned for the Spanish Navy -- is 75 to 100 tons overweight.

That may not seem like a lot, considering the submarine's full weight when submerged is 2,430 tons, but according to engineers at Navantia, the Spanish shipbuilding company responsible for its design, that excess bulk is enough to prevent the Isaac Peral from successfully resurfacing once submerged.

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